刷新mac DNS 缓存 2020-08-10

Mac OS X 清除DNS缓存
根据Mac OS X操作系统的版本选择以下命令：

Mac OS X 12 (Sierra) and later:

sudo killall -HUP mDNSResponder
sudo killall mDNSResponderHelper
sudo dscacheutil -flushcache
Mac OS X 11 (El Capitan) and OS X 12 (Sierra):

sudo killall -HUP mDNSResponder
Mac OS X 10.10 (Yosemite), Versions 10.10.4+:

sudo dscacheutil -flushcache
sudo killall -HUP mDNSResponder
2018.6